Prop firms make money in two very different ways depending on which kind of firm you are looking at. Retail proprietary trading firms, the ones that advertise funded accounts online, earn most of their revenue from the evaluation fees paid by aspiring traders, the large majority of whom never pass. Traditional institutional prop firms earn their money the older way: by trading the firm’s own capital directly in the markets and keeping the gains. The two models look similar from the outside and have almost nothing in common on the inside.
Evaluation Fees Are the Core Product
At a retail prop firm, the first and largest revenue stream is the fee a trader pays to attempt an evaluation. Depending on the simulated account size, that fee runs from roughly $50 to over $1,000. A $50,000 account evaluation might cost $200 to $400. A $200,000 account might run $800 or more. The fee is non-refundable if the trader fails.
The evaluation itself happens on a demo account. Traders have to hit a profit target while staying inside strict drawdown limits, and a single rule break ends the attempt. Firms then sell “resets” that let a trader restart for another fee, and many traders buy multiple attempts over several months. Each reset is fresh revenue without the firm ever placing a live trade.
Most reputable firms now refund the challenge fee once a trader passes and reaches their first payout. That refund model works precisely because so few people qualify for it. When the overwhelming majority never reach the payout stage, the firm keeps almost every dollar collected.
Why the Failure Rate Is the Business Model
Industry data suggests only about 5% to 10% of participants pass the evaluation stage. That number is what makes the fee stream a business rather than a gateway.
Consider a firm that sells 10,000 evaluations at $300 each in a month. That is $3 million in fee revenue. If 7% pass, roughly 700 traders reach the funded phase, and many of them still get their accounts terminated during live trading before ever withdrawing a profit. Some firms layer on “consistency rules” or minimum trading day requirements during the funded phase that narrow the funnel further.
The result is that fee revenue dwarfs profit-sharing costs by a wide margin. The firms are generally transparent about the rules, and some traders genuinely earn payouts, so this isn’t inherently a scam. But the arithmetic is clear: the firm’s profitability depends far more on traders failing than on traders succeeding.
Profit Splits on the Small Share Who Pass
Once a trader clears the evaluation, the firm keeps a cut of any profits the trader produces. Standard splits give the trader 70% to 90%, with the firm taking the rest. Some firms advertise 90/10 splits to attract sign-ups; others start lower and scale up with performance milestones.
Payouts run on a bi-weekly or monthly schedule through wire transfer, cryptocurrency, or digital payment platforms. The firm calculates its share from net profits after trading costs, and most agreements only pay from realized gains. If the account drops below the funded balance before the next payout window, there is nothing to split.
Risk rules continue during the funded phase. Exceeding maximum drawdown, breaking position size limits, or violating consistency requirements terminates the account. The trader would then need to buy a new evaluation to restart, which feeds directly back into the fee stream.
Spreads, Commissions, and Platform Fees
Trading costs are a quieter but steady revenue line. Many firms mark up the bid-ask spread or charge commissions per lot, often in the range of $3 to $7 per round turn on futures. These come straight out of the trader’s account, so the trader has to overcome the firm’s own fees before reaching profitability.
Some firms add monthly platform access fees or data subscriptions. Firms that operate a proprietary platform or act as their own broker capture the full spread and commission themselves rather than sharing it with a third party. Firms routing high volumes through liquidity providers may also earn rebates on order flow. Across thousands of active accounts, small per-trade charges accumulate into meaningful revenue, and they also slow overtrading, which reduces the firm’s payout obligations.
A-Book vs B-Book Execution
The single most important question for understanding a retail firm’s money is whether trades actually reach the market.
A-Book firms route funded traders’ orders to real liquidity providers and actual exchanges. When the trader wins, the money comes from the market. When the trader loses, the firm loses real capital. This model requires substantial reserves and institutional relationships. The firm’s profit comes from its share of the split plus challenge fees, and its interests genuinely align with the trader’s.
B-Book firms keep everything internal. Orders execute against simulated price feeds that mirror real market data, but nothing reaches a live exchange. If the trader loses, the firm keeps the notional capital. If the trader wins, the firm pays out of operating funds, which are fueled primarily by other traders’ challenge fees. This is the dominant model in the retail forex and CFD prop space as of 2025-2026.
The B-Book model creates a direct conflict of interest: the firm profits when traders lose, and its ability to pay winners depends on new fees continuing to arrive. The CFTC’s 2023 fraud complaint against Traders Global Group, doing business as My Forex Funds, alleged exactly this scenario. The agency alleged the firm acted as the counterparty to nearly all customer trades while telling customers their orders went to third-party liquidity providers, used software to delay execution and artificially widen spreads against profitable traders, and funded payouts to winners from other customers’ fees in what the CFTC described as a Ponzi-like structure.1Commodity Futures Trading Commission. CFTC Complaint – Traders Global Group
Not every B-Book firm operates fraudulently. Many run the model openly and pay consistently. But on a B-Book platform, the firm’s financial interest runs opposite to the trader’s, and payout capacity rides entirely on the flow of new evaluations.
How Traditional Institutional Prop Firms Differ
The retail challenge-fee model is relatively new. Traditional proprietary trading, which has existed for decades, works nothing like it. Institutional prop firms such as Jane Street, Citadel Securities, and Jump Trading deploy the firm’s own capital directly in the markets. Traders are recruited as employees or contractors, usually through demanding interviews, and often hold advanced degrees in quantitative fields. There is no evaluation fee and no challenge.
These firms rely on high-frequency algorithms, statistical arbitrage, and market-making strategies that exploit small price discrepancies across exchanges thousands of times a day. Leverage amplifies returns on tiny movements. The firm absorbs all losses and keeps all gains, which is the exact inverse of the retail model, where risk is pushed onto participants through non-refundable fees.
Banks face strict limits on this kind of trading under the Volcker Rule, which generally prohibits proprietary trading for their own accounts.2eCFR. 12 CFR Part 248 – Proprietary Trading and Certain Interests in and Relationships with Covered Funds Standalone prop firms unaffiliated with banks sit outside those restrictions but still carry net capital and other regulatory obligations.
Red Flags That the Revenue Model Is Unsustainable
Once you know how the money moves, warning signs become predictable. A firm promising a 100% profit split has no profit-sharing revenue, which means it depends entirely on challenge fees and, potentially, on traders losing. “Instant payouts” are worth suspicion too, because legitimate payment processing takes time and involves compliance checks.
Repeated payout delays deserve real attention. Some firms rely on vague contractual language like “activity inconsistent with our trading philosophy” or “at management’s discretion” as grounds to deny payouts to profitable traders. If the terms of service give the firm broad and undefined reasons to withhold money, the profit-sharing side of the agreement is weaker than the marketing page suggests.
The My Forex Funds case is instructive. The firm marketed itself with the tagline “your success is our business” while allegedly running a B-Book model that profited from trader losses and used software to manipulate execution against its own customers.1Commodity Futures Trading Commission. CFTC Complaint – Traders Global Group Look for firms that publish verified payout records, keep clear and specific rules rather than open-ended discretionary clauses, and have a track record of consistent withdrawals reported by independent users rather than curated testimonials on their own site.